Pipe-coupling.



Patented July 15, 902 J. W. S. NVCUM.

PIPE COUPLING.

(Application filed Nov. 2, IDOL (No Model.)

Unites hrsrss l stens @rrrcsl JOSEPH W. s. nroUM, or rirrssunc,PEhlNSYLVANIA.

PiPE=GUPLlNG.

SPECIFIGATZGN forming part of Letters Patent No. 704,909, dated July 15,1902.

Application filed November 2, 1901. Serloll Ho. 80,849. (No model. 7 I

To all whom it may concern:

Be it known that I, JOSEPH W. S. NYCUM, a

citizen of the United States of America, residing at Pittsburg, in thecounty of Allegheny and State of Pennsylvania, have invented certein newand useful Improvements in Pipehas for its object to provide novel andchi-- I cient means whereby two sections of lead pipe may be easily andquickly joined together in a manner that leakage between the ends of thesections will be impossible. Y

The invention also aims to constructecoupler readily adaptable forconnecting-the sections of leadpipe to 2 section of iron, steel, or likemetal pipe in a. manner to prevent the leakage between the sections.

Briefly described, my invention comprises a connecting membersubstantially in the form of a. double cone which is inserted in theflared ends of the pipe-sections and has an ennnler flange the two edgesof which are grooved-so that in cross-section the flange issubstantially dovetailed. The two knifeedges formed by the grooving ofthe flange ere adapted to embed themselves into the ad jecent ends ofthe pipe-sections, and the latter are bound firmly upon the connectingmember by means of sleeves and e ring-nut.

In describing the invention in detail referonce is had to theaccompanying drawings, formingapert of this speoificetiomand whereinlike numerals of reference indicate correcoupling in position on thepipe.

spending parts throughout the several views,

. in which- In the accompenying'dmwings, 1 indicatesthe sections of leadpipe, and these sections of pipe before the coupling is made are flaredsttheir ends to receive the interior connecting member 2, thisconnecting member 2 beout.

being substantially dovetailed in cross-section. The two cone memberstaper from the annular flange 8 to a point-in close proximity to theends of the member, so as to form the annular portion 6 of equeldlemeterthrough- These ends 6 in the cones are adopted, as the cones are wedgedinto the flaring or bell-shaped ends of the pipesections, to engage theconnecting-pipe until the limit of their vertical travel is reached,when they will be seated in the pipes,es shown at 7, end the annularknife-edges 5 will be seated in the ends of the pipe-sections in amanner shown in Fig. 2 of the drawings. These flat annular portions 6are adapted for use as a means for flaring the ends 05 the pipe-sectionsprevious to the insertion of the cone member. Thus in operation one ofthe ends of the member 2 is placed into the end oi the pipe, at block ofwood is placed upon the opposits end of member 2 and the same subjeotedto a driving force, which will spread the end of the pipe. withdrawn,and 2. similar operation is per,- formed upon the end of the otherpipe-section. When the cone member has thus been placed in position, thesleeve 8 is placed on one pipe- The member? is then section, this sleevehaving an annular threeded ring 9, andthe sleeve 10 is placed on theopposite pipe-section, thisrsleeve heving en annular flange 11, and thetwo sleeves, with the pipe-sections, are firmly drawn together.

by means of the ring-nut 12, having interior threads 1 to engage thethreaded flange 9 and the flange 15 to engage the flange 11.

I desire to cell particular attention to the fact that when the sealbetween the ends of the pipe-sections is effected, as shown in Fig. 2 ofthe drawings, the limit of movement between the pipe-sections hes notbeen reached, as the ends of the pipe-sections are not in engegement,and a considerable space, as at 16, is between the annular flange ll ofthe ring 10 and the flange 9 of the ring 8, so that further tighteningof the ring-nut 12 will cause the knife-edges 5 to further embedinto theend-z cf the pipe-sections, so as to spreadthe iead at the ends of thesesections to form an absolutely tight seal.

In Fig. 4 I show a connecting member 17,

which is adapted to be employed for connecta ing a section of lead pipeon to a section of iron, steel, or likepipe. This member 17 isinteriorly screw-threaded, at one end for en'- gagement with the ironpipe and is coneshaped at the other, as at 18, which end engages intothe'lead pipe in the same manner as the ends of the member 2. Thismember has an annular threaded flange l9 and an an-v space therebetwcen,of a double-cone connecting member having an annular flange roaeoe witha flat periphery provided on each side with an inwardly-extending grooveforming a knife-edge at the upper face of said flange, said knife-edges,engaging into the pipe-sections', said cone member being tapered fromsaid flange and carrying a portion at each end of equal diameterthroughout, said portion adapted to spread the ends of the pipesections,a sleeve mounted on one pipe-section and provided with an annularflange, a sleeve mounted on the opposite pipe-section and provided withan annular threaded flange, said annular flanges having a spacetherebetween adapted to be occupied by the lead out by the saidknife-edge of the connecting member, a ring-nut having its threadsengaging with said threaded flange, a flange carried by saidring-nut'for engagement with said first-named sleeve-fiange,substantially as described.

In testimony whereof I affix my signature in the presence of twowitnesses.

JOSEPH W. S. NYCUM.

Witnesses:

JOHN NOLAND, E. E. POTTER.

